Synthesis of the Star-Shaped Copolymer of -Caprolactone and L-Lactide from a Cyclotriphosphazene Core
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- 作者：Yanjun Cui ; Xiaozhen Tang ; Xiaobin Huang ; and Yan Chen
- 刊名：Biomacromolecules
- 出版年：2003
- 出版时间：November 2003
- 年：2003
- 卷：4
- 期：6
- 页码：1491 - 1494
- 全文大小：57K
- 年卷期：v.4,no.6(November 2003)
- ISSN：1526-4602
文摘
Hexakis[p-(hydroxylmethyl)phenoxy]cyclotriphosphazene was synthesized by the reaction of hexachlorocyclotriphosphazene with the sodium salt of 4-hydroxybenzaldehyde and subsequent reduction of aldehydegroups to alcohol groups by using sodium borohydride. This compound was employed in initiating thering-opening polymerization of 
-caprolactone and L-lactide to produce star-shaped poly(L-lactide) (PLA),poly(-caprolactone) (PCL), and their block copolymer with cyclophosphazene cores. 1H NMR and GPCanalysis showed narrow-distributed star-shaped polyesters were successfully synthesized with high yields.
-caprolactone and L-lactide to produce star-shaped poly(L-lactide) (PLA),poly(-caprolactone) (PCL), and their block copolymer with cyclophosphazene cores. 1H NMR and GPCanalysis showed narrow-distributed star-shaped polyesters were successfully synthesized with high yields.